杂记

 

一、位图转换成矢量图

在线位图转矢量图网站VECTORIZER

二、yum命令

当不知道命令所属哪个安装包时,可以使用yum search命令查询,例如yum search ifconfig

[root@zht-env yum.repos.d]# yum search yum-config-manager
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
 * base: mirrors.163.com
 * centos-qemu-ev: mirrors.aliyun.com
 * extras: mirrors.aliyun.com
 * updates: mirrors.aliyun.com
============================================= Matched: yum-config-manager =============================================
yum-utils.noarch : Utilities based around the yum package manager
[root@zht-env yum.repos.d]# yum install yum-utils.noarch
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
 * base: mirrors.163.com
...

yum repolist查看仓库列表